Tool for removing tappet-valves.



TOOL FOR REMOVING TAPPET VALVES.

APPLICATION FILED MAR. 20. 1918.

1,278,400. Patented Sept 10, 1918,

JAMES ANTHONEY VANSIGKLER, OF TORONTO, ONTARIO, CANADA.

TOOL FOR REMOVING TAPPFiT-VALVES.

Specification of Letters Patent.

Patented Sept. 10, 1918.

Application filed March 20, 1918. Serial No. 223,656.

ful Improvements in Tools for Removing Tappet-Valves, of which the following is the specification.

My invention relates to improvements in tools for removing tappet valves, and the object of the invention is to obviate the danger of injury to the hand of the operator caused by the accidental release of the compressed valve spring while withdrawing the cotter pin, against which the spring normally bears and it consists essentially of the following arrangement and construction of parts as hereinafter more particularly explained.

Figure 1, is a perspective view of my tool.

Fig. 2, is a side elevation of my tool on a reduced scale showing it partially in section and showing its application to a tappet valve.

Fig. 3, is a sectional detail of one end of the main spindle and turnable nut engaging therewith.

In the drawings like letters of reference indicate corresponding parts in the various figures.

1 indicates the main spindle, a portion of which is threaded, the'remaining portion being provided with flattened sides 1 and 1, such portion being unthreaded. 2' and 3 indicate links pivoted at their inner overlying ends to the flat side 1 of the spindle 1 at its inner end. a and 5 indicate links pivoted to the flattened side 1 opposite the links 2 and 3. 6 and 7 indicate links pivoted to the side 1 at the opposite end of such portion to the links 2 and 3 and 8 and 9 indicate links pivoted to the side 1 of the spindle 1 opposite the links 6 and 7 10 indicates an upper jaw member provided with rearwardly extending side arms 10*. and 10. To the forward ends of the arms adjacent to the body of the jaw member 10 the upper ends of the links 7 and 8 are pivoted by means of a cross pin 11. Adjacent to the rear ends of the arms 10 and 10 the upper ends of the arms 3 and 5 are pivoted by means of a cross bolt 12. 13 indicates a lowerjaw member which is also provided with rearwardly extending arms 14: and 15. To the forward ends of the arms 14 and 15 adjacent to the body of the jaw 13 are pivotally secured the lower ends of the links 6 and 9 by means of a cross pin 16. To the rear ends of the arms lt and 15 are pivotally secured the lower ends of the links 2 and 4 by means of a cross pin 17.

18 indicates an internally threaded sleeve forming an adjusting nut engaging the threaded end of the spindle 1. The sleeve' 18 is provided with an annular groove 18*. 19 indicates a divided block provided with a circular orifice fitting in the annular groove 18*, the divided portions of the block being connected together by cross bolts 19 and 19.

20 and 21 indicate links swung at one end upon the ends of the cross bolt 19 and at the opposite end upon the cross bolt or pin 12. 22 and 23 indicate links pivoted at one end upon the ends of the cross bolt 19 and at their opposite ends upon the cross bolt or pin 17. 2 1 indicates a cross pin extending through the end of the sleeve 18 and forming a handle by which the sleeve is turned.

The jaw member 10 is designed to fit against the lower face of the tappet head 25 (see Fig. 1), the recessed portion 10 of the jaw allowing for the passage of the stem 26 of the tappet valve.

It will be noted that the body of the jaw member 13 is larger than that of the jaw member 10 so as to fit a washer 27 against which the compression spring 28 of the tappet valve bears.

29 indicates the usual cotter pin extending through the stem 26 and against which the washer 27 bears. 30 indicates the head of the valve bearing against a suitable form of seat 31.

When it is desired to remove the valve my device is inserted in the position shown in Fig. 2, that is, with the jaw member 10 bearing against the face of the tappet 25 and the jaw member 13 bearing against the opposing face of the washer 13.

It will be seen in Fig. 2 that the jaw members 10 and 14 are drawn together by the links 5, 1, 3, 2, 7, 6, 8 and 9, being carried to the angular position shown in Fig. 2. When the parts are in the position shown in Fig. 2 the nut sleeve 18 is turned by means of the handle 24. The block 19 is held in a relatively stationary position and the threaded spindle 1 is carried forward by the turning of the sleeve 18 thereby carrying the pivot points of the links 2, 3, 4., 5, 6, 7 8 and 9 upon the spindle 1 forward and thereby spreading the jaw members 10 and 14 apart, at the same time; holding them in an absolutely parallel position. By this operation the device is carried fromtheiposition shown in full lines in Fig. 1 to the posi- .tion shown by dotted lines, in which dotted line position the spring 28 is compressed and the Washer 27 carried away from the cotter pin 29. By this means the spring is held definitely in position withoutany danger of its slipping therefrom. The cotter pin 29 may then be Withdrawn by the operator and the stem 26 of the valve pulled longitudinally through'the spring Without any danger of such spring flying back from its compressed position and injuring the hand of the operator. If desired the spring may be held compressed during the repairing of the valve and the valve replaced without the spring being released.

VV-hat I claim as my invention is.

1. 'In a tool for removing'tappet Valves, a j aW member adapted to engage the tappet at one end, a jaw member adapted to engage the opposing washer against which the spring of the valve bears, a spindle, links a aw member adapter to engage the tappet at one end, a jaw member adapted to en- "gage the opposing washer against which the spring of the valve bears, a-spindle; links extending from the sides of "the jawmembers at each end, thelinks of-one jaw member being pivotedtothe opposing links of the other jaw member, a nut screwed upon-the spindle, and 'links between the nut' and jaw members, substantially as described.

JAMES ANIHONEY VANSICKLER.

Vvitnessesz EGAN, A. POWELL.

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